Peters



E. WANT.

Eyeglass.

Patented Sept. 1, I868.

' luau 15 Q 4 Jam- {g me game jjatent @ffinr.

EDWIN WANT, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO HIMSELF AND J. E. SPENCER, OF SAME PLACE.

Letters-Patent .No. 81,849, dated September 1, 1868.

IMPROVEMENT IN EYE-GLASSES.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, EDWIN WANT, of New Haven, in the county of New Haven, and State of Connecticut, have invented a new Improvement in Eye-Glasses; and I do hereby declare the following, when taken in connection with the accompanying drawings, and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a front view of a. pair of eye-glasses open, embodying my improvement, and in Figure 2 a similar view enlarged.

This invention relates to an improvement in the construction of the eye-glasses for which Letters Patent were granted to me, dated January 15, 186i; and the invention consists in doubling the spring at the point of attachment, so as to strengthen the spring at that point, and prevent its breaking.

To onablc'othcrs to construct my improvement, I will proceed to describe the same as illustrated in the accompanying drawings.

A is the one glass, B the other, fitted in the bows in the usual manner, the one provided with a hook, G, which, when doubled on to the other, hooks on to a stud, D, on the handle. The spring E is a continuous spring from one end, F, to the other end, G, and is attached to the bows at the point H, by a screw or rivet passing therethrough.

Thus far these glasses are the same as my original patent. When thus constructed, I find that the spring is liable to break at the point of connection, as at that point the spring is partially cut away for the screw or rivet to pass through, and that point, being the fulcrum over which the spring. bends, is thus weakened so that the spring frequently broalts at that point.

To avoid this, I place over the spring proper, at the point of connection, another plate, at (sec fig. 2,) which extends up above the screw or rivet, and so that in operation the actual fulcrum or point, from which the spring bends is the end of the said late a. Thus so far removed from the oint of connection it is almost im essible to break the springs.

The said plate (4 may extend down to the ends of the spring, as seen in fig. Z, or but partially down, the full object being accomplished by the portion which extends above the point of connection.

I do not wish to he understood as broadly claiming the arrangement of one leaf-of a spring upon another,

as such is common in elliptic and other springs.

Having thus fully described my invention, what I claim as new and useful, and desire tosccure by Letters Patent, is

In combination with the bows of eye-glasses, constructed and arranged upon their spring E, substantially in the manner described, the application of plates H H, at the point of attachment of the bows, to the spring E, in the manner and for the purpose specified.

EDWIN WANT.

Witnesses A. J. Trnnrrs,

JJII. Snunwnr. 

